/// @brief Indicates if the connection can no longer be used for normal
/// operations. Typically a connection is marked unusable after an unrecoverable
- /// DB error. There may be a time during which the connection exists after
- /// such an every during which it cannot be used for anything beyond checking
+ /// DB error. There may be a time when the connection exists, after
+ /// such an event, during which it cannot be used for anything beyond checking
/// parameters and error information. This flag can be used as a guard in
/// code to prevent inadvertent use of a broken connection.
bool unusable_;